Sharpness Cont... 2

Sharpness at 70mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The LUMIX G VARIO HD 14-140mm F4.0-5.8 ASPH. MEGA O.I.S. lens was attached to a Panasonic Lumix DMC-GH2 compact system camera, which in turn was mounted on a sturdy tripod. The self-timer was used to avoid any vibrations from pressing the shutter release. Slight tonal changes are due to slight changes in natural light during the session.

The full frame at 70mm

Centre and edge sharpness is best at f/8. Performance gradually decreases from there, reaching unacceptable levels at f/16.